Title:
BALL VALVES
Document Type and Number:
United States Patent 3490734

Inventors:
Freeman, Mathew L.
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Sponsored by:
Flash of Genius
Publication Date:
01/20/1970
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Referenced by:
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Assignee:
ROCKWELL MFG CO
Primary Class:
251/175
Other Classes:
29/890.130, 251/315.150, 137/375, 251/315.160
International Classes:
F16K5/06; F16K27/06; F16K5/08; F16K25/00; B23P15/26
US Patent References:
2387013Making turncocks
3231235Ball valve
3348805Ball valve
3216696Lubricated ball plug valve with relieved surface on seat ring
Foreign References:
DE1012501B




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